Shanghai is proposed to build a new management system of carbon emission based on the carbon emission ranking management and carbon productivity.

上海市有必要在碳源等级管理和碳生产率基础上建立全新的碳排放管理体系。

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Based on the concept, this paper will research the challenge which we face in the process of increasing carbon productivity, and then put forward the relevant measures.

本文正是基于此研究了在提高我国碳生产率的过程中所面临的挑战，及其相应的对策。

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The good news is that a number of countries are already making real progress in addressing the three challenges of climate resiliency, reduced carbon emissions and increased agricultural productivity.

有一个好消息是，许多国家已经在解决气候变化所带来的三个挑战方面有了很大的进步，减少了碳排放量，提高了农业生产力。

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